Devtools
Devtools
| List of tools tagged as Devtools |
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CSS Border Radius Generator
Generate border-radius CSS from corner values, slash syntax, and preview dimensions with fit warnings, Tailwind output, and copy-ready code.
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CSS Box Shadow Generator
Build a CSS box-shadow stack with editable layers, live surface previews, CSS/SCSS output, and a ledger for checking each shadow.
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CSS Flexbox Generator
Generate flexbox CSS for responsive rows, columns, wrapping, gaps, and child sizing with a live preview, property notes, and starter HTML.
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CSS Grid Generator
Generate CSS Grid layout rules from a selector, strategy, gaps, and alignment, with a live preview, fit projections, scaffold, and audit ledgers.
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JSON Schema Generator
Generate a draft-aware JSON Schema from sample JSON in your browser, with required-field choices, nullable handling, and review ledgers.
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README Generator
Draft a README from project details, setup commands, usage examples, and license choices with readiness checks and follow-up repository tasks.
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Test Data Generator
Generate repeatable synthetic test rows from field recipes and seeds, then export CSV, JSON, NDJSON, or SQL with recipe quality checks.
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Web App Manifest Generator
Generate a web app manifest with install markup, icon asset checks, and warnings for launch scope, display mode, colors, and shortcuts.
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.env File Generator
Turn key-value rows into reviewed .env and .env.example files with quote safety checks, duplicate-key warnings, and masked secret previews.
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.gitignore Generator
Draft a repository-ready .gitignore from stack, OS, editor, secret, and exception choices, with warnings for broad or duplicate patterns.
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.gitignore Pattern Coverage Checker
Check whether .gitignore rules protect generated or sensitive paths, with in-browser coverage metrics for negations, tracked files, and gaps.
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API Key Generator
Generate API keys in your browser with public IDs, entropy checks, check segments, storage hashes, and sensitive-batch warnings.
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API Pagination Window Calculator
Calculate an API pagination window from item counts, page caps, rate limits, latency, and workers, with shard timing and page-size tradeoff charts.
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Acceptance Criteria Generator
Draft acceptance criteria from a story, actor, outcomes, behaviors, and edge cases with Gherkin, review checks, and exportable ledgers.
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Application Log Pattern Analyzer
Analyze application log excerpts in your browser, group repeated failure patterns, and review severity counts, time buckets, and triage rows.
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Application Programming Interface (API) Testing Tool
Test an HTTP API directly from your browser, import cURL commands, inspect CORS-blocked failures, and save clean response traces.
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Attenuator Pad Calculator
Calculate Pi or T attenuator pad values for matched RF, video, or audio lines, then check preferred resistor rounding and wattage.
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Avro Schema Compatibility Validator
Compare released and proposed Avro schemas by compatibility mode, with field-level blockers, alias/default checks, and registry-ready notes.
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Base64 Encoder and Decoder
Encode or decode Base64 text and files in your browser with URL-safe output, padding repair, byte inspection, and Data URL support.
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Binary Decimal Hex Converter
Convert an integer between binary, decimal, hex, octal, and Base36 while checking signed widths, byte order, bit fields, and wrap.
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Bitwise Operations Calculator
Calculate bitwise masks, shifts, rotations, and flags with fixed-width binary, hex, signed readouts, bit maps, width audits, and density charts.
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Bug Report Generator
Turn bug details into tracker-ready Markdown, triage fields, JSON, and a reproducibility checklist with severity and privacy review notes.
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Build Artifact Storage Calculator
Estimate retained CI artifact storage from build cadence, refs, retention, compression, caches, reserve allowance, and quota headroom.
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CI Failure Log Analyzer
Analyze a failed CI job log, rank line-numbered failure clues, group stages, suggest next checks, and mask secret-like snippets before sharing.
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CODEOWNERS Coverage Analyzer
Check CODEOWNERS coverage for changed files, flag missing, ownerless, or catch-all ownership gaps, and build a review-ready fix queue.
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CSS Gradient Generator
Generate CSS gradients with live geometry, draggable color stops, modern color-space choices, syntax warnings, and copy-ready CSS output.
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CSS Minifier
Minify CSS in your browser, keep token-sensitive syntax intact, compare byte savings, and catch parser or handoff warnings before release.
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Case Converter
Convert headings, labels, filenames, and identifiers into 13 case styles with line-by-line conversion, acronym control, and accent-folded slugs.
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Changelog Generator
Draft a changelog from notes, Markdown sections, or Conventional Commit subjects with Keep a Changelog grouping, SemVer cues, and copy-ready Markdown.
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Comma-Separated Values (CSV) Converter
Convert CSV-like text into previews, profiles, and reusable exports in your browser while checking headers, delimiters, types, and row warnings.
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Conventional Commit Messages Checker
Check Conventional Commit headers or full messages, find format issues, and map valid changes to major, minor, patch, or no release impact.
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Credit Card Number Generator
Generate sandbox payment card numbers with Luhn checks, custom BIN/IIN options, seeded batches, optional CVV or expiry, and prefix reports.
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DOCX Converter
Convert a DOCX in your browser into clean HTML, Markdown, text, and audit-friendly exports with package checks, warnings, and image controls.
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Dependency License Flags Checker
Check dependency license evidence against allowed, review, and denied policies with SPDX expression triage, scope filters, risk scores, and review queues.
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Dependency Update Risk Analyzer
Triage dependency update rows by SemVer change, runtime scope, security, tests, and compatibility so risky upgrades enter owner review.
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Docker Compose Generator
Build Docker Compose YAML for a service, then review image or build choices, port exposure, secrets, healthchecks, networks, and volumes.
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Dockerfile Generator
Build a Dockerfile and .dockerignore for Node.js, Python, Go, or Java services with cache mounts, health checks, and hardening warnings.
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Duplicate Line Remover
Remove repeated lines from pasted text or a local text file, tune case and whitespace matching, and audit kept rows with metrics and a ledger.
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ENV Converter
Convert .env files into YAML, JSON, runtime env, INI, and properties output while checking parsed lines, expansion gaps, and secret-like values.
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Environment Variable Inventory Checker
Check environment variables against a required list and get redacted findings for missing, blank, duplicate, placeholder, and secret-like entries.
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Extensible Markup Language (XML) Converter
Convert XML in your browser into JSON, JSON Lines, tables, SQL inserts, and formatted XML with record-path checks and schema clues.
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Favicon Generator
Generate favicon PNGs, favicon.ico, HTML links, and manifest icons from one image with local processing, size checks, and previews.
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Feature Flag Cleanup Checker
Audit feature flag inventories for stale, expired, ownerless, dependency-blocked, and code-referenced flags with a prioritized cleanup queue.
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File and Disk Size Converter
Convert file and disk sizes across decimal and IEC units, then estimate usable capacity, allocation slack, and the first common storage tier.
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Filebeat Grok Pattern Generator
Generate a Filebeat Grok pattern from one sample log line, with ECS field mapping, sample-match coverage, and optional ingest pipeline JSON.
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Fuel Efficiency Converter
Convert fuel efficiency between MPG (US), L/100 km, and km/L with direction cues, unusual-value warnings, rounded equivalents, and charted sensitivity.
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Git Branch Staleness Analyzer
Audit Git branch inventories locally with age, merge, protection, ahead/behind, and gone-upstream signals before deleting stale branches.
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Git Diff Risk Analyzer
Analyze Git diff summaries before review, highlighting churn, sensitive paths, deletion pressure, generated files, and binary changes.
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GitHub Actions Matrix Generator
Generate GitHub Actions matrix workflow YAML with runtime and runner axes, cache choices, include/exclude rows, and review checks.
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GraphQL Formatter
Format GraphQL queries, fragments, and schema SDL locally, compare readable and compact output, and catch bracket or role warnings before handoff.
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Gzip Compression Checker
Check HTTP compression evidence for a URL or pasted headers, including gzip/Brotli selection, cache variation, and byte-savings risk.
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Gzip Text Decompressor
Decompress gzip, zlib, and raw deflate text locally from Base64, hex, escaped bytes, or files with wrapper checks and byte evidence.
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HCL Converter
Convert HCL or Terraform config in your browser into YAML, JSON, and flat key-value views with path ledgers and schema drift checks.
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HMAC Generator
Generate HMAC signatures in your browser from text or local files, with SHA, RIPEMD, legacy MD5, byte encodings, prefixes, and match checks.
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HTML Boilerplate Generator
Generate an HTML starter document with title, language, metadata, asset paths, warnings, and copy-ready head or full-page markup.
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HTML Entity Lookup
Find the right HTML entity for a symbol, name, or code point, with alias checks, Unicode bytes, and paste forms for HTML, CSS, JavaScript, and URLs.
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HTML Escape and Unescape Tool
Escape HTML snippets in your browser or decode entities back to text with context profiles, pass-by-pass logs, and copy-safety warnings.
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HTML Minifier
Minify HTML in your browser, compare byte savings, and review spacing, comments, raw-text blocks, and attribute risks before copying.
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HTML Tag Stripper
Turn HTML fragments, emails, or pages into browser-local plain text with spacing controls, safe URL checks, image-alt handling, and review tables.
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HTML Unescaper
Decode escaped HTML text or small files in your browser, inspect each entity change, and flag unresolved or script-shaped output.
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HTML to JSX Converter
Turn pasted or loaded HTML and SVG into JSX locally, with React attribute fixes, style objects, event warnings, and migration checks.
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HTML to Markdown Converter
Convert pasted or loaded HTML into readable Markdown in your browser, with dialect choices, table safeguards, warnings, and reviewable exports.
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Heatsink Thermal Resistance Calculator
Calculate the heat-sink thermal resistance budget from device power, junction limit, interface loss, ambient heat, and airflow context.
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Helm Values Schema Validator
Validate values.yaml against values.schema.json, with Helm-style failure details, schema coverage, hygiene warnings, and a CI command snippet.
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Hreflang Tag Generator
Build hreflang clusters from locale URL rows, then copy head tags, sitemap XML, or HTTP headers with audits for self-reference and x-default.
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INI Converter
Convert INI or CFG text in your browser into JSON, YAML, properties, environment-variable text, and normalized INI with parser checks.
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IP Address to Decimal Converter
Convert an IPv4 address or 32-bit integer into decimal, plus hex, binary, mapped IPv6, range labels, and octet-weight checks.
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JSON Converter
Turn messy JSON or JSON Lines into clean tables, branch-aware previews, and safer handoff files with path and precision checks in your browser.
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JSON Diff Comparator
Compare two JSON payloads in your browser, review path-level changes, tune array matching, ignore noisy fields, and export audit evidence.
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JSON Formatter
Format JSON in your browser into readable, compact, line-stream, and sorted outputs with duplicate-key, number precision, and size checks.
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JSON Repair Tool
Turn broken JSON-like paste into strict JSON in your browser, with repair evidence for comments, wrappers, loose literals, and precision risks.
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JSON Schema Breaking Changes Checker
Check JSON Schema changes in your browser, flag required-field, type, enum, constraint, closure, and $ref risks, and export evidence.
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JSON Sorter
Turn messy JSON into repeatable key order in your browser, with JSONC cleanup, duplicate-key warnings, path review, and array-order controls.
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JSON Validator
Validate JSON, JSONC, JSON5, or JSON Lines locally, then inspect syntax errors, duplicate keys, precision risks, and formatted output.
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JSON to CSV Converter
Turn nested JSON or JSON Lines into clean CSV or TSV, with record-path selection, flattened headers, previews, and spreadsheet formula checks.
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JSON to TypeScript Converter
Turn messy JSON or JSON Lines samples into TypeScript declarations with optional-field evidence, null handling, guard code, and review notes.
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JSON-LD Generator
Generate JSON-LD structured data for Article, Product, Organization, and FAQ pages with visible-content checks and copy-ready markup.
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JSONPath Tester
Test JSONPath selectors on pasted or loaded JSON locally, compare matched values with paths and JSON Pointers, and check filter or syntax issues.
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JUnit Test Report Analyzer
Analyze JUnit XML from CI runs in your browser with pass-rate gates, failure triage, retry clues, skipped cases, and slow-test flags.
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JWT Decoder
Decode a compact or Bearer JWT in your browser, inspect readable claims, and review timing, issuer, audience, signature, and sensitive-claim warnings.
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JavaScript Minifier
Minify JavaScript in your browser, review syntax feedback and gzip savings, and choose safer settings for modules, comments, and source maps.
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Key-Value Config Converter
Convert INI, .properties, and .env text into JSON, YAML, or handoff config with a key ledger, duplicate checks, and local parsing.
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Large Language Model (LLM) Usage Cost Calculator
Estimate LLM API spend from prompt and output tokens, retries, cache hits, fixed fees, and budget caps with model price comparisons.
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MAC Address Generator
Generate MAC address batches for labs and fixtures with prefixes, local/unicast flag control, seeded replay, uniqueness checks, and exportable results.
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Markdown Previewer
Review Markdown before publishing with GFM or CommonMark rendering, raw-HTML handling, safe links, heading anchors, and local exports.
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Markdown Table Generator
Generate a GitHub-style Markdown table from CSV, TSV, semicolon, or pipe data with header detection, pipe escaping, column audits, and exports.
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Markdown to HTML Converter
Convert Markdown into reviewable HTML with a sanitized preview, conversion ledger, and raw-HTML or external-link warnings before publishing.
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Meta Tag Generator
Generate search and social meta tags from page details, with canonical URL checks, robots warnings, preview image validation, and copy-ready markup.
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Microstrip Impedance Calculator
Estimate single-ended PCB microstrip impedance or solve target trace width from stackup geometry, Dk presets, model comparison, and tolerance checks.
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Netcat Command Generator
Build netcat or ncat commands for authorized connect, listen, scan, TLS, proxy, and transfer tasks with shell-aware quoting and warnings.
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Op-Amp Gain Calculator
Calculate op-amp gain for common feedback circuits, solve missing resistors, and check rail swing, bandwidth, slew rate, tolerance, and load current.
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Open Graph Tag Generator
Build Open Graph and X card meta tags from page details, preview images, article data, and crawler warnings before copying head markup.
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Open Graph Tag Previewer
Preview social share cards from pasted HTML or a public URL, then review Open Graph, X card, image, canonical, and crawler warnings.
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OpenAPI Operation Coverage Checker
Check OpenAPI operation coverage against test evidence, spot missing or unmatched routes, and turn release-gate gaps into an owner-ready queue.
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Properties Converter
Convert Java .properties text into safer handoff formats, with duplicate-key warnings, path checks, and browser-side parsing.
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Pull Request Cycle Time Calculator
Calculate pull request cycle time from PR CSV timestamps, compare pickup delay and slow-tail percentiles, and export ledgers, charts, and JSON.
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Quick Response (QR) Code Generator
Build QR codes for links, Wi-Fi, contacts, messages, and events with scan-readiness scoring, logo checks, and downloadable images.
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Rate Limit Backoff Schedule Calculator
Plan a rate-limit retry schedule with Retry-After floors, jitter windows, pacing math, timeout checks, and shared-client safety notes.
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Regex Sample Matches Checker
Test JavaScript regex patterns against accepted and rejected samples, with whole-line mode, match spans, timeout limits, and exportable verdicts.
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Regex Tester
Test a JavaScript regex against sample text, inspect match spans and capture groups, catch timeout warnings, and preview replacements.
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Release Notes Generator
Turn commits, PR lists, or release bullets into grouped release notes with readiness warnings, change ledgers, and exportable drafts.
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Resistor Combination Finder
Find resistor combinations for a target value, compare series, parallel, and mixed matches, and check tolerance plus part power stress.
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Robots.txt Generator
Build a robots.txt file from crawler sections, path rules, sitemap hints, and imports, then review crawl-policy warnings before publishing.
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SARIF Security Findings Analyzer
Analyze SARIF security logs in your browser with release-gate counts, priority findings, rule and file hotspots, and fingerprint warnings.
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SBOM Component Risk Analyzer
Review SBOM component risk from CycloneDX, SPDX, Syft, or CSV data, ranking vulnerabilities, license gaps, weak identity, and policy findings.
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SCSS to CSS Compiler
Compile SCSS, indented Sass, or plain CSS in your browser, then review compiled CSS, source-map output, metrics, and audit warnings.
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SQL Formatter
Format pasted SQL or a local file for database review, with dialect-aware layout, caveat warnings, statement metrics, and audit exports.
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SQL INSERT Generator
Generate SQL INSERT scripts from pasted rows or local CSV files with dialect quoting, literal typing, delimiter detection, and row and column review.
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SQLite Manager
Inspect a local SQLite file in your browser, run SQL, make careful rowid-table edits, and export rows, SQL dumps, or a database copy.
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SVG Placeholder Generator
Build SVG placeholders with exact canvas sizes, readable labels, contrast warnings, live previews, and copyable HTML or CSS embed snippets.
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Sallen-Key Filter Calculator
Calculate Sallen-Key low-pass, high-pass, or band-pass stages locally with f0, Q, response curves, preferred values, and headroom checks.
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Secure Shell (SSH) Client Config Editor
Edit an SSH client config in your browser, reorganize Host blocks, test wildcard matches, and review lint, security, and diff reports.
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SemVer Bump Required Checker
Check release notes or commit subjects for the SemVer bump floor, compare a planned version, and flag breaking, feature, fix, and neutral signals.
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Sitemap URL Extractor
Extract sitemap URLs from pasted XML, text files, or a public URL with filters, duplicate checks, source evidence, audit warnings, and exports.
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Slug Generator
Generate readable URL, file, anchor, and CSS-ready slugs from titles or batch lines with Unicode handling, smart trimming, and paste checks.
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Stack Trace Signature Analyzer
Group pasted stack traces into stable fingerprints, compare frame evidence, and spot recurring failures without sending trace text away.
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TOML Converter
Turn TOML into target config formats with parse checks, key-path ledgers, type previews, and schema sketches for safer migrations.
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Tab-Separated Values (TSV) Converter
Convert TSV or delimiter-separated rows into clean tables and typed exports with header detection, row warnings, and column profiles.
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Table Data Converter
Turn pasted or local table files into clean Markdown, JSON, HTML, or delimited output with previews, header repair, and formula warnings.
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Test Case Generator
Turn a feature workflow into manual, Gherkin, or automation-ready test cases with traceable IDs, boundary coverage, review checks, and exports.
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Test Shard Runtime Calculator
Estimate CI test shard wall time from suite size, setup cost, timing coverage, runner capacity, target gaps, and runner-minute cost curves.
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Text Diff Comparator
Compare original and revised text in your browser with ignore options, unified diff output, change tables, warnings, and exportable review data.
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Thread Pool Saturation Calculator
Calculate thread pool saturation from active workers, queue depth, arrival rate, task time, wait percentiles, and capacity scenarios.
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URL Encode and Decode Tool
Encode or decode URL text by context in your browser, inspect percent escapes and plus-space rules, and catch round-trip issues before copying.
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URL Parser
Parse a URL or query string into components, query rows, encoding notes, masked sensitive values, a length profile, and a rebuilt review link.
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Unicode Character Lookup
Inspect a character, grapheme, code point, or escape, then get Unicode names, U+ values, UTF bytes, normalization changes, and hidden-text warnings.
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Universally Unique Identifier (UUID) Generator
Generate UUIDs in your browser for random, name-based, and time-ordered IDs with namespace checks, anatomy details, and history.
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User Story Generator
Draft a user story from role, goal, benefit, and acceptance checks, then review criteria, boundaries, readiness warnings, and exports.
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User-Agent Parser
Parse a User-Agent string or request header into browser, OS, device, bot, token, and Client Hints evidence for support or log review.
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Voltage Divider Calculator
Calculate loaded voltage-divider output, solve R1 or R2 from a target voltage, and check load sag, current, power, tolerance, and E-series fit.
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What Is My Browser
Identify your current browser, storage, graphics, privacy, and compatibility signals with share-ready support notes and exposure warnings.
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What Is My Screen Resolution
Check screen resolution, viewport size, DPR, breakpoint fit, capture dimensions, and density warnings from your current browser session.
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XML Diff Comparator
Compare two XML documents in your browser, catch parse errors, match repeated nodes by key or order, and review changed paths with exportable ledgers.
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XPath Tester
Test XPath against XML or HTML in your browser, compare node or scalar results, and review namespace checks, match ledgers, and code snippets.
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YAML Converter
Convert YAML into JSON, env, INI, properties, and path tables with local parsing, document checks, schema review, and scalar-only exports.
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YAML Formatter
Format YAML in your browser, check parse warnings, path rows, change deltas, and JSON handoff data before replacing source text.
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YAML Validator
Validate YAML text or files in your browser, catch parser errors and duplicate keys, and inspect document counts, paths, and parsed JSON.
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cURL Command Generator
Build a shell-ready curl command from URL, method, headers, auth, body, retries, and timeouts with quoting, import parsing, and warnings.
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npm Audit Summary Analyzer
Summarize npm audit JSON or CI text into a release gate, severity ledger, fix-pressure queue, charts, and local exports for handoff.
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